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Add to TODO:

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> * Improve how ANALYZE computes in-doubt tuples
>
>   http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php
>
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Bruce Momjian 2008-04-03 16:37:07 +00:00
parent 51e1445f10
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2 changed files with 9 additions and 2 deletions
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doc/TODO
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PostgreSQL TODO List PostgreSQL TODO List
==================== ====================
Current maintainer: Bruce Momjian (bruce@momjian.us) Current maintainer: Bruce Momjian (bruce@momjian.us)
Last updated: Wed Apr 2 21:55:58 EDT 2008 Last updated: Thu Apr 3 12:36:59 EDT 2008
The most recent version of this document can be viewed at The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html. http://www.postgresql.org/docs/faqs.TODO.html.
@ -1620,6 +1620,10 @@ Optimizer / Executor
* Improve ability to display optimizer analysis using OPTIMIZER_DEBUG * Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
* Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and * Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
actual row counts differ by a specified percentage actual row counts differ by a specified percentage
* Improve how ANALYZE computes in-doubt tuples
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php
* Consider using hash buckets to do DISTINCT, rather than sorting * Consider using hash buckets to do DISTINCT, rather than sorting
This would be beneficial when there are few distinct values. This is This would be beneficial when there are few distinct values. This is

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<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF"> <body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
<h1><a name="section_1">PostgreSQL TODO List</a></h1> <h1><a name="section_1">PostgreSQL TODO List</a></h1>
<p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/> <p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/>
Last updated: Wed Apr 2 21:55:58 EDT 2008 Last updated: Thu Apr 3 12:36:59 EDT 2008
</p> </p>
<p>The most recent version of this document can be viewed at<br/> <p>The most recent version of this document can be viewed at<br/>
<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>. <a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
@ -1398,6 +1398,9 @@ first. There is also a developer's wiki at<br/>
</li><li>Improve ability to display optimizer analysis using OPTIMIZER_DEBUG </li><li>Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
</li><li>Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and </li><li>Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
actual row counts differ by a specified percentage actual row counts differ by a specified percentage
</li><li>Improve how ANALYZE computes in-doubt tuples
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php">http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php</a>
</p>
</li><li>Consider using hash buckets to do DISTINCT, rather than sorting </li><li>Consider using hash buckets to do DISTINCT, rather than sorting
<p> This would be beneficial when there are few distinct values. This is <p> This would be beneficial when there are few distinct values. This is
already used by GROUP BY. already used by GROUP BY.